During a remarkably combative Oval Office meeting on Friday, both President Donald Trump and Vice President JD Vance told Ukrainian President Volodymyr Zelensky that he was insufficiently thankful. “You have to be thankful. You don’t have the cards,” Trump said, adding a bit later, “You gotta be more thankful.” “Have you said thank you once this entire meeting?” Vance asked. Trump might have been referring to Zelensky’s posture toward Trump in particular, as Vance appeared to be. But as their heated exchange with Zelensky reverberates around the world, it’s worth noting that Zelensky has thanked the United States on numerous...